Knob attachment.



7 E. HILL'.- 7

KNOB ATTACHMENT.

APPLICATION FILED JULY 1, 1908.

Patented Dec. 22, 1908.

WITNELSSEJIJ;

EBENEZER HILL, OF NORWALK, CONNECTICUT.

KNOB ATTACHIIENT.

Specification of Letters Patent.

Patented Dec. 22, 1908.

Application filed July 1, 1908. Serial No. 441,273.

To all whom it may concern:

Be it known that I, EBENEZER HILL, a citizen of the United States, residing at Norwalk, in the county of Fairfield and State of Connecticut, have invented a new and useful Improvement in Knob Attachments, of which the following is a specification.

This invention relates to means for attaching knobs to lock and latch s indles and adjusting the knobs on the spin es so that they will properly fit the escutcheon plates on the doors.

The object of the invention is to provide a means which is simple to construct and apply, which is easy to adjust, and which holds the knobs very strongly and firmly when set.

The accompanying illustration shows an edge view of a door with knobs secured by means which embody this invention, one of the knobs and the means for securing and adjusting it upon the spindle being in central longitudinal section.

The spindle 1 is square in cross section as usual, and it extends through the door 2 and the escutoheon plates 3 in the ordinary manner. One or both knobs may be attached to the spindle by my improved means. To provide for the attachment of a knob by means of the present improvement the square spindle has its corners threaded, and turning upon this threaded section of the spindle is an interiorly threaded nut 4 which is circular in cross section, and which has at its outer end an annular exterior flange 5. Turning about the flanged end of the nut is a sleeve 6 which has an interior annular flan e 7. This sleeve has an interior thread and fittin the threaded section of the sleeve is the t readed hub 8 of the knob 9, the central opening of which is square and loosely fits the s uare spindle. Fastened upon the exterior o the nut by driving, pinning 0r brazing, so as'to secure the parts rigidly, is a collar 10. This collar has, inside of the flange of the sleeve, an exterior annular flange 11, the edge of which may be milled, knurled, or otherwise roughened or provided with holes by means of which it may be conveniently grasped for turning the collar and the nut.

A split sprin washer 12 may be placed between the en of the hub of the knob and the flanged end of the nut for the purpose of increasing the tightness of the parts and looking them together.

gage, suflicient play being left so that the sleeve may be rotated, and then the collar may be put upon and secured to the nut with its flanged end adjacent to the flanged end of the sleeve. With these parts in this position, the spindle is thrust through the door and latch or look case and the nut turned upon the threads of the spindle until the flange of the collar holds the spindle in the proper ad- 'ustment. After these parts are located the ob canbe drawn upon the spindle by turning the sleeve on the threaded hub until the end of the hub is drawn firmly against the flanged end of the nut. This clamps the parts rigidly together and the knob cannot e loosened without turning the sleeve which is now bound between the flanged end of the collar on the nut. At any time the parts can be adjusted on the spindle so as to fit the door by loosenin the sleeve and turning the nut by means of t e flanged collar, afterwhich the sleeve is again tightened.

The invention claimed is:

1. The combination with an angular spindle provided with screw threads, of a nut turning u on the threads and carrying two exterior anges, a sleeve turning upon the nut and having a portion held between said flanges, said sleeve being interiorly threaded, and a knob having a central opening loosely fitting the spindle and a threaded hub fitting the threaded section of the sleeve, substantially as specified.

2. A knob attachment having an interiorly threaded nut carrying two exterior flanges, said nut being adapted to engage a threaded spindle, and a sleeve rotatable about the nut and having a portion held between the flanges, said sleeve having an interior screw thread, and adapted to engage a threaded knob hub, substantially as specified.

3. A knob attachment having an interiorly threaded nut with an exterior flange, said nut bein adapted to engage a threaded spindle, a co ar with an exterior flange secured to the nut, and a sleeve turning about the nut and having a flange held between the nut flange and collar flange, said sleeve having an interior thread and adapted to engage a threaded knob hub, substantially as specified.

4. A knob attachment having a knob, an interiorly threaded nut with an exterior flange, said nut-being adapted to engage a a spring washer between the nut flange and threaded spirdle, ahcollar with an exterior knob, substantially as specified.

an e secure to t e nut, a s eeve turnin abol lt the nut and having a flan e held be EBENEZER HILL" 5 tween the nut flange and the co lar flange, Witnesses:

said sleeve having an interior thread, and J. E. SLATER, adapted to engage a threaded knob hub, and S. M. STEVENS. 

